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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86e4a8bbc76eed400649d61378c6e734426fd740bc762a3eaadac2c08ad344c5' 
  AND token = 'ccjWbcbCw+iHPacLBm4QJy0vIjK9g1pxUwjDeMKBZ8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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