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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41e02c09b3015b94385b4874eb14cc79baf2bc3534329eb9016d384e619c4e2e' 
  AND token = 'o8Fi1hTTEaNhdu2JJ01rWm6/Fc9wxmcNxR1hGzADxek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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