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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '22cee87eca32ec079a62452321001aa8a7412b57e76e0bb665dd063d67af5baa' 
  AND token = 'wzHJARfcnxDtMWL2jMTZkqbkmNekP+4R1SWLINSQddk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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