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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '11062eb44cd89825eaddb4dc42b5ec3d147fc499d3cd7613140c3c465eae98ba' 
  AND token = 'm8LZ2TIGEz35kbekNfH+X4P2SnNbD+f9nxmUrkXP/Ik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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