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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cf1a2496c103359fec563a3ea27cc8057a3dac49f112c4d54ce1530e6cbb24a7' 
  AND token = 'TquoYzgfqWvQTTrDnDVw8rPItHCn627Prbg1GuCNWd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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