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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c565b2b4402a57648b3abcffacaed230074b54cc11357547854d44ed409973a8' 
  AND token = '/XanA3AvjY6CrxoXuSMmTkyMxwyS1LnJ1L2kecgKr9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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