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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e92ac0aa0b1ef803bd4cf68ead7110df81f3faf816abd195acef26c316543890' 
  AND token = '080V3A9NOZgHW7HdXRNSu0JNMPRciRt8LVquHbKUiV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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