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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd2220031a340b39a0f0ae725e490b4651c8be4c5769e2481406f93904142a739' 
  AND token = 'T5uqz8L/tHF2aWiA24Twp/+/k7fTh5hdkZzgGuevTf0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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