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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a60991da8ecbb8b9abb7524e0a8f96bc774dcedc38c22a83dbc2701130fb2991' 
  AND token = 'X6cyLEL0bVDx45wj0Uz/2TFax8bK7wlW6gaRav/VEE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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