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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '00af1f472edd27251d424267a9e18e1ed1d3784979b90db87d7bbddd0d9bb49e' 
  AND token = 'aDGbyVMHLAyA5Fhv6DQJjIoNLpJiDCyn9J7zUxlUCUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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