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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '62584d79b4881ece4280068112e9ca8ae6a183eeb9ed43f5ed1b94bc08310fa6' 
  AND token = 'HzOqVaLw6kZlZrHpOWdAimOhumX8N1tc1TX88Bqqj04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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