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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4dad6c910e3b8328b0b495e620f046007975617eed450ad20cad15c0a4457033' 
  AND token = 'I4YiDnk4QE/gj3ZKA6UbN4pFF31UNUJZD0r/X4VYBAI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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