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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c1b0450fef652f033f7d8e909d32c8813c677ba8027fe1a67b986425830671ec' 
  AND token = '59mk727R4XgFSEjWxih4Urh94Z4Wxcza2cHarOXHgt4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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