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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '383e5914660dc959c580e9ce5eba4e2fcc71d0294c9b28ce0b79239506de2169' 
  AND token = 'L17hQOa2Dk2z5bfp0xkDSa9IABEj1mDNnfzLsOShwks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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