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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0d58d65e7b6fb42d0996f246d291788e9b906091f96987cdfcbb81da677799d' 
  AND token = 'FQ1tjmVPPi1Jj2o52jtPR4JwQC4BUY2GFBL8d8OY1u8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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