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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faa6c64e25c2ae4ff4e3e8543335a8b7066df31cdcc8eb9c437e67942835d682' 
  AND token = 'bzQ6PuAvGt9+E9YunYUVMTkMSX02spNyPyP0Q1K9nnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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