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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01657d7ee4e9bd240146143e3695fe54eeeaab5bceac6133937581c26a306dde' 
  AND token = '1oWiX7rds3HzoZincAfGS+lTc2b6/r65/0IP0u2FdRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}